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The t statistic is calculated by assuming that the sample size is large.
Endogenous Opiates
Naturally occurring chemicals in the body that reduce pain, enhance pleasure, and play a role in the stress response, similar to opioids.
Spinal Cord
A long, thin, tubular structure made up of nervous tissue, which extends from the brain and is encased within the vertebral column.
Acetylcholine
A neurotransmitter in both the central and peripheral nervous systems that plays a crucial role in muscle movement and cognitive functions.
Adrenaline
Also known as epinephrine, a hormone and neurotransmitter that increases heart rate, contracts blood vessels, dilates air passages, and participates in the fight-or-flight response of the sympathetic nervous system.
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